Elevator.



N0. 66l,|36. Patented N-IJVQY 6, |900.

R. ARDELL.

ELEVATDR.

(Appnmzion med oct. 2s, 1599.)

(No Model.)

Patented Nw. 6,|9oo. R. ARnELL.

E L E V A T 0 B.

(Application iled Oct. 23, 1899.)

3 Sheets-Sheet 3.

Ulu Nudel.)

TH: Nbims Pneus co., Pgmauwo., wnsumcmn. D. c.

UNITED STATES PATENT OFFICE.

ROBERT ARDELL, OF ROTTNEROS, SWEDEN, ASSIGNOR TO THE LINK BELT MACHINERY COMPANY, OF CHICAGO, ILLINOIS. i i

ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 661,136, dated November 6, 1900. Application filed October 23, 1899. Serial No. 734,597. (No model.)

To @ZZ whom it may concern,.-

Be it known that I, ROBERT ARDELL, a citizen of Sweden,A residing at Rottneros Bruk,

Rottneros, Sweden, have invented a certain new and useful Improvement in Elevators, of

which the following is a specification.

My invention relates to devices for moving barrels, sacks, packages, or the like from one level to another, and has for its object to'prolo vide a new and improved device for this purpose.

My invention is, illustrated in the accompanying drawings, wherein- Figure l is a side view of one form of device embodying my invention. Fig. 2 is an enlarged side View of the engaging armupon which the material or device operated upon is supported. Fig. 3 is a view of Fig. 2 with the parts in position to discharge the device zo or material from the engaging arm. Fig. 4 is a cross-section of the device of Fig. 1 with parts omitted. Fig. 5 is a View of one of the tripping-levers. Fig. 6 is a View of one of the holding-arms.

z 5 Like letters refer to like parts throughout the several figures.

The device is provided with any suitable frame A, carrying a movable supporting device B, to which is attached one or more of 3o the engaging arms which engage the' materia'l to be handled. These engaging arms are suitably spaced, and it is of course evident that any desired number may be employed. I have not described the framework of my device in detail for the reason that the construction of such framework may be greatly varied, the details of such construction being no part of my presen't invention. The movable supporting device to which the en- 4o gaging arms are attached may beof any suitable construction. When the form of my device herein illustrated is used, I prefer to use the ordinary link chain for the movable supporting device.

The engaging arms are illustrated in Figs.

2 and 3 and are so constructed as to automatically discharge the material at any desired point and are adapted to be automatically folded when moving in one direction, so as to 5o occupy a very small space. In the construction illustrated I have shown two similar engaging arms placed at some distance from each other and adapted to engage barrels or sacks, the arms being connected to two endless belts or chains which pass over suitable v pulleys A A2, supported by the frame A. Each engaging arm i's provided with a tripping-arm C, pivoted at C/ to a holding-arm C2, which is pivotally connected with a rod D, attached to the movable supporting de- 6c. vice, which is in this case the two chains and which support a similar arm in substantially the same plane. The inner end of said tripping-arm is normallysupported by this rod D and is preferably provided with a washer 4 C3, the purpose of which is to prevent noise when the arm is automatically folded. The holding -arm C2 projects beyond the rod D and when the parts are in' their operative position normally engagesa cross-piece D,which 7o extends between the two chains. This crosspiece is connected by suitable links D2 with the rod D and is connected by braces D3 with the chains or movable supporting device carrying the engaging arms. It will be seen that these braces D3 instead of projecting beyond the chains, so as to increase the wid th of the device, are contained within the outer boundary of the chains or the frame. This construction permits the engaging arms to be folded, 8o so as to occupy very little space. The holding-arms C2, which engage the cross-piece D', when in their operative position are held in this operative position by the braces D3. Said holding-arms are, however, free to move in the opposite direction, so that they may be properly folded. A tripping-lever E is pivotally connected withthe rod D and is lalso pivotally connected with the tripping-arm C at the point E. The engagement ofthe trip- 9o ping-lever with the tripping-arm is such that they may be moved one along the other in addition to the pivotal movement. This result is obtained by providing the trippingarm with a slot E2, through which the pivotal pinconnected with the tripping-lever passes. The inner end of the tripping-lever projects beyond the cross-piece D and a suitableen-` gaging device Esis as sociatedwiththe` frame at the point where the material is toV be distoo charged, the engaging device so positioned that it engages the tripping-lever and moves the parts to the position shown in Fig. 3. It

is of course evident that this v.engaging device-may be located at any point desired and that several such devices may be used, so that the arm may be tripped at various points. In this event. the devices would be removable or constructed so as to be rendered inoperative, so that the tripping-lever would only be actuated when the arm arrived at the proper position. When the ordinary elevating devices having projecting arms are used, a suitable space must be allowed t'or the projecting arms as they pass around the lower pulleys, and the material to he elevated must be raised above the floor, so as to be substantially on a line with-the center ot said lower pulleys, or a pit must be provided into which the end of the device is lowered. ln many instances, as when the device is used in boats, it is impossible to provide a pit, and hence the material must be elevated before it can be operated upon. IVhen the construction herein shown is used, this evil is practically obviated. At the bottom of the frame A are suitable guides F, which engage the ends of the engaging arms as they move around the bottom of the frame, thus preventing them from unfolding until they have started on their upward journey. This construction allows the arms to be moved around the lower pulleys in a much smaller space than if the arms were left free. The braces being at all times within the frame are entirely out of the way. In the construction shown it will be seen that the pivotal point C of the tripping-arm-that is, the arm upon which the material is directly supported-is near the outer end thereof and is so located as to oe on the outside of the center of gravity of this material, so that the material or article itself tends to hold the parts in their operative position. The construction whereby the engaging arins are braced one way and are free to move the other way permits said arms to automatically fold when they pass over the upper pulleys, as shown in Fig. l, thus allowing them to be passed downwardly in a very small space. This construction very materially reduces the space occupied by the elevator and has numerous advantages that will readily occur to those versed in the art.

In operating the device the barrel, sack, or other material is placed in a position where it will be engaged by the engaging arms as they move along t-he frame. Vhen the barrel or other article has reached thc proper level, the tripping-lever E comes in contact with the engaging device E3 and the parts are moved so as to discharge said barrel from the engaging arms. The parts return to their normal position after the barrel is discharged and on passing over the upper pulleys automatically fold, as shown in Fig. '1, and remain in this folded position until they reach the bottom of the frame.

I have described a particular construction in order to make my invention clear; but it is, of course, evident that the parts maybe varied in form, construct-ion, and arrangement without in any manner departing from the spirit of my invention. I therefore do not limit myselfin any manner to such construction.

I claiml. A device for conveying articles from one level to another, comprising a movable supporting device, a series of arms pivotally connected therewith, bracing attachments for said arms so that they project outwardly when in their operative position, a tipping device associated with said arms To cause them to tip and discharge the article at the proper point, a folding device associated with said arms to cause them to fold when in their inoperative position.

2. A device for conveying articles from one.

level to another, comprising a movable supporting device, a series ot arms pivotally connected therewith, bracing attachments for said arms so that they project outwardly when in their operative position, a tipping device associated with said arms to cause them to tip and discharge the article at the proper point, a folding device associated with said arms to cause them to fold when in their inoperative position, the several devices for bracing, tipping and folding the arms situated so that they are substantially wholly within the movable supporting device when the arms are folded.

3. A device for conveying articles from one level to another, comprising a flexible movable supporting device, a series of engaging arms movably connected therewith, a portion of each of said arms projecting inwardly past the movable supporting device, a brace for each arm connected with the movable supporting device and associated with the inwardly-projecting part of the arm, so as to be contained within the space bounded by said movable supporting device.

4. A device for conveying articles from one level to another, comprising a suitable frame, a movable supporting device mounted thereon, an engaging arm connected with said movable supporting device, a brace pivotally connected with said arm and connected with said movable supporting device, said brace contained within the outer boundaries of said frame.

5. A device for conveying articles from one level to another, comprising a frame, a movable supporting device mounted thereon, an engaging arm connected with said movable supporting device comprising a tripping-arm, a holding-arm movably connected therewith and connected with said movable supporting device, a brace associated with said holdingarm and connected with said movable supporting device, so as to be wholly contained within the outer boundaries of said frame, and a tripping-lever for said tripping-arm.

6. A device for conveying articles from one level to another, comprising a frame, a movable supporting device mounted thereon, an.

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engaging arm movably connected with saidV connected with a movablesupporting device,y

said holding-arm provided with an inwardlyprojecting part, a brace adapted to be connected with the supporting device and so positioned as to engage the inwardly-projecting part of said holding-arm so as to prevent its movement in one direction, and a link connecting said brace with said holdingarm, whereby the arm may be automatically folded, substantially as described. 1

8. A device for conveying articles from'one level to another, comprising a frame, a exible movable supporting device mounted thereon,

suitable direction-changing devices near the top and bottom of said frame, about which said flexible supporting device passes, a folding arm movably connected with said supporting device and adapted to automatically fold in passing over one of said directionchanging devices, and a guide in proximity to the other direction-changing device and adapted to engage said arm so as to retard the unfolding thereof.

ROBERT ARDELL.

Witnesses:

H. DAHLGREN, GUsT. FAGERDAHL. 

